Hey everyone - I can't believe I live across the street from this meet; the hi-fi stars have aligned.

Disclaimer: Like a bunch of you, I guess, I'm also new to higher-end headphone audio. I have a lot of music on my Mac Air, but all of it is MP3 quality and I have no DAC. Should I bother bringing it?
Also, I've been getting back into CDs but my player is garbage. Will there be something to play the cds?